GasBike Racer Chain Drive Motorized Bicycle

GasBike Racer Chain Drive Motorized Bicycle with HuaSheng 49cc 4-Stroke Engine NOTE: ASSEMBLY REQUIRED. WE CAN ONLY SHIP THIS WITH UPS OR FEDEX GROUND. WE CANNOT SHIP THIS EXPEDITED.THIS COMES IN 2 PACKAGES. IN MOST CASES, THE ENGINE KIT WILL BE DELIVERED FIRST, THEN THE BICYCLE THE NEXT DAY OR TWO.   GasBike Racer Chain Drive Kit with HuaSheng 49cc 4-Stroke Engine This kit features a 49cc HuaSheng motor with Clutch Flyweight for 5/8 Tapered Shaft, using a chain drive single speed transmission. This kit includes a 2 piece wide crank kit, if the bike has a 1 piece crankset a conversion bottom bracket will need to be used. 4 Stroke engine kits are very different from 2 stroke kits in many ways. Building a 4 stroke bike is a little more involved then the two strokes, the extra effort is worth it. Pull start engine, not push start like the 2 strokes. Overall this type of engine is more reliable with more power and torque. With some of the larger cc motors, the top speeds far exceed the 2 s